1220021023133 has 6 divisors (see below), whose sum is σ = 1341014843742. Its totient is φ = 1109110020920.

The previous prime is 1220021023121. The next prime is 1220021023147. The reversal of 1220021023133 is 3313201200221.

It can be written as a sum of positive squares in only one way, i.e., 781832629369 + 438188393764 = 884213^2 + 661958^2 .

It is not a de Polignac number, because 1220021023133 - 2¹² = 1220021019037 is a prime.

It is a super-3 number, since 3×1220021023133³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220021023103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5041409066 + ... + 5041409307.

It is an arithmetic number, because the mean of its divisors is an integer number (223502473957).

Almost surely, 2^{1220021023133} is an apocalyptic number.

It is an amenable number.

1220021023133 is a deficient number, since it is larger than the sum of its proper divisors (120993820609).

1220021023133 is a wasteful number, since it uses less digits than its factorization.

1220021023133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10082818395 (or 10082818384 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1220021023133 its reverse (3313201200221), we get a palindrome (4533222223354).

The spelling of 1220021023133 in words is "one trillion, two hundred twenty billion, twenty-one million, twenty-three thousand, one hundred thirty-three".